InChI=1S/C19H20O8/c1-22-16-12(21)6-9-13-10(7-26-14(9)18(16)24-3)8-5-11(20)17(23-2)19(25-4)15(8)27-13/h5-6,10,13,20-21H,7H2,1-4H3/t10-,13-/m0/s1